Roy Family Genealogy
Family: William de Ferrers, Earl of Derby / Sibyl de Braose (F2987)
m. Abt 1173
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Robert de Ferrers, Earl of Derby ( -1141)
|
Bertha de Gloucester (1123- )
|
William de Braose ( -1211)  |
| Bertha de Braose ( -1170) |
| William de Ferrers, Earl of Derby ( -1190)
|
| William de Ferrers, Earl of Derby ( -1247) |
| Agatha de Ferrers (1168- ) |
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